Proceedings ArticleDOI
Analysis and mitigation of subsynchronous oscillations in a radially-connected wind farm
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TLDR
In this article, a voltage regulator model of series compensated power system is proposed and linear state space model of SVC is developed for mitigating subsynchronous oscillations (SSO).Abstract:
Subsynchronous oscillations (SSO), especially, subsynchronous resonance are potential problems in series compensated power system. A fixed speed wind farm employing single cage induction generator (IG) and double cage IG connected to series compensated line are prone to SSR problem. This paper presents some investigations on SSO resulting from induction generator effect (IGE) with the wind turbine generator (WTG) modelled either as single cage IG or double cage IG. Eigenvalue analysis is carried out for various levels of series compensation for different sizes of wind farm with varying power outputs. Eigenvalue analysis is validated by the electromagnetic transient simulations using PSCAD/EMTDC software. The possibility of steady state SSR (IGE) and transient SSR is investigated in depth using PSCAD/EMTDC for the modified IEEE first bench mark (MFBM) model. SVC is employed for mitigating SSR. A new voltage regulator (VR) model of SVC is proposed and linear state space model of SVC is developed. Eigenvalue analysis conducted with the proposed voltage regulator reveals that the proposed VR model is more effective in mitigating SSR compared to VR models that are reported in the literature.read more
Citations
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Journal ArticleDOI
Mitigating subsynchronous control interaction in wind power systems: Existing techniques and open challenges
TL;DR: This study presents an overview of potential SSCI mitigation techniques at various stages of the power system, including system planning, operation, control, and protection phases at both network and generation sides and reviews the active damping controls utilizing flexible ac transmission systems and WTC controls.
Sub-Synchronous Resonance Analysis in DFIG-Based Wind Farms: Mitigation Methods - TCSC, GCSC, and DFIG Controllers - Part II (Power-Point Presentation)
TL;DR: This paper studies three different possibilities for the addition of controllers that perform SSR damping to eliminate induction generator effect SSO (SSIGE) in series compensated doubly-fed induction generator (DFIG) based wind farms.
Journal ArticleDOI
Safe Sub Synchronous Oscillations Response for Large DFIG-Based Wind Farms
TL;DR: An accurate analysis of the instability in DFIG-based wind farms due to the use of series compensation and provided maximum power extraction from these farms using the high compensation without the unstable sub-synchronous oscillation occurrence is presented.
Journal ArticleDOI
Mitigation of subsynchronous control interaction in DFIGs using active disturbance rejection control
Chaohang Zheng,Hua Li +1 more
TL;DR: A detailed model-based time-domain simulation results show that O-ADRC can effectively mitigate the SSCI under different operating conditions and provide sufficient damping for the DFIG-based wind farms.
Journal ArticleDOI
A subsynchronous resonance prevention for DFIG-based wind farms
TL;DR: Subsynchronous resonance (SSR) instability was accurately analyzed in doubly fed induction generator (DFIG)-based wind farms by the linearization of equations and modal analysis and the participation factor was shown to be the capacitor series voltage of the line, considered an input signal to the SSRPC.
References
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Journal ArticleDOI
SSR results obtained with a dynamic phasor model of SVC using modal analysis
TL;DR: In this article, an improved dynamic phasor model of Static Var Compensator (SVC) is presented for high frequency analysis (above 5 Hz) and takes into account the influence of Phase Locked Loop (PLL) circuit dynamics.
Journal ArticleDOI
On Fixed-Speed WT Generator Modeling for Rotor Speed Stability Studies
TL;DR: In this paper, the effects of symmetrical voltage sags on generator behavior are studied in detail, and the rotor speed stability of the turbine is also examined and rotor speed recovery time is proposed as an indicator of system stability.
Journal ArticleDOI
Application of an auxiliary controlled static var system for damping subsynchronous resonance in power systems
Narendra Kumar,M. P. Dave +1 more
TL;DR: In this article, a static var system (SVS) auxiliary controller for damping subsynchronous resonance in power systems has been proposed and demonstrated, which stabilizes all the torsional modes over a wide operating range.
Journal Article
Auxiliary-controlled static var system for damping subsynchronous resonance in power systems
Narendra Kumar,M. P. Dave +1 more
TL;DR: In this paper, a novel SVS controller known as the combined reactive power and frequency (C.R.P.F) auxiliary controller has been developed and incorporated in the SVS control system located at the middle of a series-compensated long transmission line.